Add tests for set_ontology_iri

Cover setting IRI on empty ontology, setting with version IRI,
replacing an existing IRI, clearing the IRI, persistence across
reload, and read-only rejection.

Author: Minitour

src/ontology/owl_api.rs

@@ -855,6 +855,88 @@ Ontology(
         assert!(has_label_comment);
     }
 
+    // ── set_ontology_iri ──────────────────────────────────────────────────────
+
+    #[test]
+    fn set_ontology_iri_on_empty_ontology() {
+        let f = empty_ofn();
+        let mut api = OwlApi::load(f.path(), false, false).unwrap();
+        let msg = api
+            .set_ontology_iri(Some("http://example.org/my-onto"), None)
+            .unwrap();
+        assert!(msg.contains("IRI set to"));
+        let meta = api.ontology_metadata();
+        let joined = meta.join(" ");
+        assert!(joined.contains("http://example.org/my-onto"));
+    }
+
+    #[test]
+    fn set_ontology_iri_with_version() {
+        let f = empty_ofn();
+        let mut api = OwlApi::load(f.path(), false, false).unwrap();
+        let msg = api
+            .set_ontology_iri(
+                Some("http://example.org/onto"),
+                Some("http://example.org/onto/1.0"),
+            )
+            .unwrap();
+        assert!(msg.contains("IRI set to"));
+        assert!(msg.contains("version IRI set to"));
+        let meta = api.ontology_metadata();
+        let joined = meta.join(" ");
+        assert!(joined.contains("http://example.org/onto"));
+        assert!(joined.contains("http://example.org/onto/1.0"));
+    }
+
+    #[test]
+    fn set_ontology_iri_replaces_existing() {
+        let content = "Ontology(<http://old.example.org/onto>)\n";
+        let f = ofn_with_content(content);
+        let mut api = OwlApi::load(f.path(), false, false).unwrap();
+        let meta_before = api.ontology_metadata();
+        assert!(meta_before.iter().any(|s| s.contains("old.example.org")));
+
+        api.set_ontology_iri(Some("http://new.example.org/onto"), None)
+            .unwrap();
+        let meta_after = api.ontology_metadata();
+        assert!(!meta_after.iter().any(|s| s.contains("old.example.org")));
+        assert!(meta_after.iter().any(|s| s.contains("new.example.org")));
+    }
+
+    #[test]
+    fn set_ontology_iri_persists_across_reload() {
+        let f = empty_ofn();
+        {
+            let mut api = OwlApi::load(f.path(), false, false).unwrap();
+            api.set_ontology_iri(Some("http://example.org/persisted"), None)
+                .unwrap();
+        }
+        let api2 = OwlApi::load(f.path(), false, false).unwrap();
+        let meta = api2.ontology_metadata();
+        assert!(meta
+            .iter()
+            .any(|s| s.contains("http://example.org/persisted")));
+    }
+
+    #[test]
+    fn set_ontology_iri_clear() {
+        let content = "Ontology(<http://example.org/will-clear>)\n";
+        let f = ofn_with_content(content);
+        let mut api = OwlApi::load(f.path(), false, false).unwrap();
+        let msg = api.set_ontology_iri(None, None).unwrap();
+        assert!(msg.contains("cleared"));
+        let meta = api.ontology_metadata();
+        assert!(!meta.iter().any(|s| s.contains("will-clear")));
+    }
+
+    #[test]
+    fn set_ontology_iri_readonly_returns_error() {
+        let f = empty_ofn();
+        let mut api = OwlApi::load(f.path(), true, false).unwrap();
+        let result = api.set_ontology_iri(Some("http://example.org/x"), None);
+        assert!(matches!(result, Err(OwlApiError::ReadOnly)));
+    }
+
     // ── expand_curie ─────────────────────────────────────────────────────────
 
     #[test]